Need help got a 06 Rubicon 4.0 manual transmission when its cold the rev limiter kicks in when driving after it gets warm and I shut it off and restart it revs like normal.
... From the FSM, referring to the reset button… “Holding this switch depressed while turning the ignition switch from the Off position to the On position will initiate the EMIC self-diagnostic actuator test.”
To get the trouble codes you need to turn the key without starting on-off-on-off-on & read the code(s) if any, in the odometer display. It will say done when finished or in some early yrs using 2 digit codes say 55. For those “12” may come up but disregard that.
This works on most yrs but not all including some around 2000.